comment on this calibration


 node name
Lipotyphla     Look for this name in NCBI   Wikipedia   Animal Diversity Web
  recommended citations Benton et al. 2015
  node minimum age
61.6 Ma
With records from the Torrejonian, the minimum estimate of Adunator can be tied to the top of the Danian at 61.6 Ma ± 0.0 Myr (Gradstein et al., 2012, p. 400; Woodburne, 2004).
  node maximum age
164.6 Ma
The soft maximum date is based on the divergence of Eutheria from other mammals in the late Jurassic, represented by Juramaia (Luo et al., 2011). This taxon is represented in the Daxigou site of the Tiaojishan Formation, Liaoning Province, Northeastern China, and has been constrained by radiometric dates to derive from deposits of just over 160 Ma in age (Luo et al., 2011). The equivalent marine stage is the Oxfordian (Gradstein et al., 2012), with a lower boundary of 163.5 Ma ± 1.1 Myr, and thus 164.6 Ma is a soft maximum.
 primary fossil used to date this node 
USNM 9640
Adunator ladae , Simpson, 1935
Location relative to the calibrated node: Crown

[show fossil details]
     Locality: Montana
     Stratum: Fort Union Formation
     Geological age: Miocene, Neogene, Cenozoic

More information in Fossilworks   PaleoBioDB

  phylogenetic justification
Adunator is a member of Erinaceomorpha, according to phylogenetic analyses by Novacek et al. (1985) and Smith et al. (2002), and so is a nested within crown Lipotyphla.
  phylogenetic reference(s)
Novacek, M.J. 1985. On the classification of early Tertiary Erinaceomorpha (Insectivora, Mammalia). American Museum Novitates, 2813:1-22.
Smith, T., Bloch, J.I., Strait, S.G., and Gingerich, P.D. 2002. New species of Macrocranion (Mammalia, Lipotyphla) from the earliest Eocene of North America ad its biogeographic relationships. Contributions from the Museum of Paleontology, The University of Michigan, 30:373–384.
 tree image (click image for full size) 
tree image